#layout{
    width: 900px;
    height: 500px; 
    margin-top: 200px; 
    background-color: #999999;
}
h1>div{
    margin-top: 40px;
}
.none{
    display: none;
}
#hint{
    height: 30px;
    font-size: 17px;
    color:orangered;
}
.hint{
    margin-left: 15px;
    height: 30px;
    font-size: 17px;
    color:orangered;
}
.input-w{
    margin-bottom: 15px;
    width: 300px;
}
.input-wm{
    margin-top: 10px;
    width: 300px;
}
.Captcha{
    display: flex;
    align-items: center;
}
.Captcha>img{
    margin-top: 10px; 
    height: 50px;
}
.Captcha>a{
    margin-top: 10px;
    margin-left: 20px;
    font-size: 17px;
}
.log{
    font-size: 17px;
    padding: 10px;
}
.pt{
    font-size: 17px;
}
.fw{
    width: 600px;
}
.w{
    width: 100px;
    border-bottom: none;
    padding-left: 20px;
}
.pp{
    padding-top: 7px;
    padding-bottom: 7px;
}
.bg{
    width: 280px;
    height: 145px;
    border-bottom: 1px solid #777;
}
.bg div{
    text-align: left;
    margin-left: 15px;
    padding-top: 6px;
    font-size: 17px;
}
.bg img{
    width: 280px;
    height: 145px;
    border: none;
}
.course{
    width: 280px;
    height: 195px;
    margin: 90px 0px 0px 40px;
    border: 1px solid #777;
    float: left;
}
.course .c{
    padding-left: 35px;
    height: 50px;
    line-height: 50px;
    text-align: left;
    font-size: 20px;
}
.add{
    width: 260px;
    height: 150px;
    padding-top: 45px;
}
.a span{
    display: block;
    width: 100px;
    height: 100px;
    background: url(../system/img/add.png) no-repeat -4px -17px;
    margin: 0 auto;
    transition: background-position 0.5s;
}
.a span:hover{
    background-position: 50% 91%;
}
.t{
    margin-top: 20px;
    margin-bottom: 10px;
}
.btn-m{
    margin-top: 5px;
}
.btn-p{
    margin: 0px 25%;
    width: 50%;
}